I believe John Hopkins is a center of excellence. I go to the Mayo Clinic. The COE's tend to have the best in research, equipment, doctors and most have just about every type of treatment that is out there. They then tend to recommend that treatment which is best for the cancer, not just the one treatment some smaller practices my offer. I think you are wise to at least consult with a COE. You are still free to go back to any doctor you want but at least you will have that second opinion. I will say a prayer all goes well for you and your husband.